公开(公告)号：US20160045112A1

公开(公告)日：2016-02-18

申请号：US14436489

申请日：2013-10-28

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bjoern WEISSLER ,  Volkmar SCHULZ ,  Pierre Klaus GEBHARDT ,  Peter Michael Jakob DUEPPENBECKER ,  Christoph Werner LERCHE

IPC: A61B5/00 ,  G01R33/00 ,  A61B6/00 ,  A61B5/055 ,  A61B6/03

CPC classification number: A61B5/0035 ,  A61B5/055 ,  A61B6/037 ,  A61B6/4258 ,  A61B6/4417 ,  A61B6/5205 ,  A61B6/5247 ,  A61B6/54 ,  A61B8/4416 ,  A61B2560/0204 ,  A61B2560/0214 ,  G01R33/0029 ,  G01R33/4808 ,  G01R33/481 ,  G01R33/4814 ,  G01T1/1603 ,  G01T1/2985

Abstract: The present invention relates to a method and a system for reducing interference between a non-MR imaging system (e.g. a PET imaging scanner) and an MR imaging system. The method comprises receiving at least a signal indicative of the MR RF signal detection period, and in response to the received signal, setting the state of at least a portion of the non-MR imaging system to an inactive state during at least a portion of the MR RF signal detection period.

Abstract translation: 本发明涉及一种用于减少非MR成像系统（例如PET成像扫描仪）和MR成像系统之间的干扰的方法和系统。 所述方法包括至少接收到指示MR RF信号检测周期的信号，并且响应于所接收的信号，在非至少一部分非MR成像系统的至少一部分期间将非MR成像系统的至少一部分的状态设置为非活动状态 MR RF信号检测周期。

公开(公告)号：US20160187497A1

公开(公告)日：2016-06-30

申请号：US14911052

申请日：2014-08-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Werner LERCHE ,  Sampath POORNIMA ,  Torsten SOLF

IPC: G01T1/164

CPC classification number: G01T1/1647

Abstract: The present invention relates to a calibration method (100) for a gamma ray detector (3, 51) including a scintillator array (5) for emitting scintillation photons at photo conversion positions in response to incident gamma rays and a photodetector array (7) coupled thereto in light-sharing mode for determining a spatial intensity distribution of scintillation photons. The method comprises the steps of recording (S10) spatial intensity distributions of scintillation photons emitted by the scintillator array (5) in response to multiple incident gamma rays, determining (S22) sets of coincidently emitted scintillation photons from the recorded spatial intensity distributions, determining for the sets of coincidently emitted scintillation photons center-of-gravity positions (S24) and cumulative energies (S26), performing (S28) a clustering analysis based on the determined center-of-gravity positions and cumulative energies to obtain clusters (26a, 26b, 33) of gamma ray events attributed to a scintillator array element (15), cumulating (S29) for a cluster (26a, 26b, 33) the spatial intensity distributions to determine a cumulative spatial intensity distribution of scintillation photons emitted in response to incident gamma rays in the scintillator array element and determining (S30) a light matrix including expected spatial intensity distributions of scintillation photons for different scintillator array elements (15) based on the cumulative spatial intensity distributions. The present invention further relates to a calibration module (41) for a gamma ray detector (3, 51) including a recorder (43), a cumulation module (45) and a matrix module (47) for performing the functions of the above-explained method. Still further, the present invention relates to a gamma ray detector (3, 51) as well as to a medical imaging device (49) comprising this gamma ray detector (3, 51).

公开(公告)号：US20160084974A1

公开(公告)日：2016-03-24

申请号：US14888567

申请日：2014-04-30

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Werner LERCHE ,  Sarah LODOMEZ ,  Volkmar SCHULZ ,  Bjoern WEISSLER

IPC: G01T7/00 ,  G01T1/20 ,  G01T1/164

CPC classification number: G01T7/005 ,  G01T1/1642 ,  G01T1/2018

Abstract: The invention concerns an evaluation apparatus (50) for evaluating gamma radiation events detected by a gamma camera (10) and identifying valid gamma radiation events, said (gamma camera (10) including a scintillator (12) for emitting scintillation photons (42) at photo conversion positions (44) in the scintillator (12) in response to incident gamma rays (22) and resulting gamma radiation events and a position-sensitive photodetector(14) for detecting emitted scintillation photons (42) and obtaining therefrom a spatial signal distribution (24). The invention further concerns a calibration apparatus (56) for in-situ calibrating a position-sensitive photodetector (14) of a gamma camera (10) for the detection of gamma radiation events.

Abstract translation: 本发明涉及一种评估装置（50），用于评估由伽马照相机（10）检测的伽马射线事件并识别有效的伽马辐射事件，所述（伽马照相机（10））包括用于发射闪烁光子（42）的闪烁体（12） 响应于入射的伽马射线（22）和所产生的伽马辐射事件，闪烁体（12）中的光转换位置（44）和用于检测发射的闪烁光子的位置敏感的光电检测器（14），从而得到空间信号分布 本发明还涉及一种用于原位校准伽马照相机（10）的位置敏感光电检测器（14）用于检测伽马辐射事件的校准装置（56）。